2 File: linux/reiserfs_xattr.h
5 #include <linux/config.h>
6 #include <linux/init.h>
7 #include <linux/xattr.h>
9 /* Magic value in header */
10 #define REISERFS_XATTR_MAGIC 0x52465841 /* "RFXA" */
12 struct reiserfs_xattr_header {
13 __le32 h_magic; /* magic number for identification */
14 __le32 h_hash; /* hash of the value */
19 struct reiserfs_xattr_handler {
23 int (*get) (struct inode * inode, const char *name, void *buffer,
25 int (*set) (struct inode * inode, const char *name, const void *buffer,
26 size_t size, int flags);
27 int (*del) (struct inode * inode, const char *name);
28 int (*list) (struct inode * inode, const char *name, int namelen,
30 struct list_head handlers;
33 #ifdef CONFIG_REISERFS_FS_XATTR
34 #define is_reiserfs_priv_object(inode) IS_PRIVATE(inode)
35 #define has_xattr_dir(inode) (REISERFS_I(inode)->i_flags & i_has_xattr_dir)
36 ssize_t reiserfs_getxattr(struct dentry *dentry, const char *name,
37 void *buffer, size_t size);
38 int reiserfs_setxattr(struct dentry *dentry, const char *name,
39 const void *value, size_t size, int flags);
40 ssize_t reiserfs_listxattr(struct dentry *dentry, char *buffer, size_t size);
41 int reiserfs_removexattr(struct dentry *dentry, const char *name);
42 int reiserfs_delete_xattrs(struct inode *inode);
43 int reiserfs_chown_xattrs(struct inode *inode, struct iattr *attrs);
44 int reiserfs_xattr_init(struct super_block *sb, int mount_flags);
45 int reiserfs_permission(struct inode *inode, int mask, struct nameidata *nd);
46 int reiserfs_permission_locked(struct inode *inode, int mask,
47 struct nameidata *nd);
49 int reiserfs_xattr_del(struct inode *, const char *);
50 int reiserfs_xattr_get(const struct inode *, const char *, void *, size_t);
51 int reiserfs_xattr_set(struct inode *, const char *, const void *, size_t, int);
53 extern struct reiserfs_xattr_handler user_handler;
54 extern struct reiserfs_xattr_handler trusted_handler;
55 #ifdef CONFIG_REISERFS_FS_SECURITY
56 extern struct reiserfs_xattr_handler security_handler;
59 int reiserfs_xattr_register_handlers(void) __init;
60 void reiserfs_xattr_unregister_handlers(void);
62 static inline void reiserfs_write_lock_xattrs(struct super_block *sb)
64 down_write(&REISERFS_XATTR_DIR_SEM(sb));
66 static inline void reiserfs_write_unlock_xattrs(struct super_block *sb)
68 up_write(&REISERFS_XATTR_DIR_SEM(sb));
70 static inline void reiserfs_read_lock_xattrs(struct super_block *sb)
72 down_read(&REISERFS_XATTR_DIR_SEM(sb));
75 static inline void reiserfs_read_unlock_xattrs(struct super_block *sb)
77 up_read(&REISERFS_XATTR_DIR_SEM(sb));
80 static inline void reiserfs_write_lock_xattr_i(struct inode *inode)
82 down_write(&REISERFS_I(inode)->xattr_sem);
84 static inline void reiserfs_write_unlock_xattr_i(struct inode *inode)
86 up_write(&REISERFS_I(inode)->xattr_sem);
88 static inline void reiserfs_read_lock_xattr_i(struct inode *inode)
90 down_read(&REISERFS_I(inode)->xattr_sem);
93 static inline void reiserfs_read_unlock_xattr_i(struct inode *inode)
95 up_read(&REISERFS_I(inode)->xattr_sem);
98 static inline void reiserfs_mark_inode_private(struct inode *inode)
100 inode->i_flags |= S_PRIVATE;
105 #define is_reiserfs_priv_object(inode) 0
106 #define reiserfs_mark_inode_private(inode)
107 #define reiserfs_getxattr NULL
108 #define reiserfs_setxattr NULL
109 #define reiserfs_listxattr NULL
110 #define reiserfs_removexattr NULL
111 #define reiserfs_write_lock_xattrs(sb)
112 #define reiserfs_write_unlock_xattrs(sb)
113 #define reiserfs_read_lock_xattrs(sb)
114 #define reiserfs_read_unlock_xattrs(sb)
116 #define reiserfs_permission NULL
118 #define reiserfs_xattr_register_handlers() 0
119 #define reiserfs_xattr_unregister_handlers()
121 static inline int reiserfs_delete_xattrs(struct inode *inode)
125 static inline int reiserfs_chown_xattrs(struct inode *inode,
130 static inline int reiserfs_xattr_init(struct super_block *sb, int mount_flags)
132 sb->s_flags = (sb->s_flags & ~MS_POSIXACL); /* to be sure */
137 #endif /* __KERNEL__ */